HELL Yes! Took me 3 hours, started in Madagascar with a parasite, made it no symptoms, kept upgrading the uncurable and opening tiers for sickness and removing the afflictions I got for free, and let it sit until it hit every country out there. Then I waited until it got the "Stealthy" attribute, made it contagious as hell, let everyone have it then made it lethal as hell, and Voila!

Man, that was a 3 hours well spent!